He said that the anti-Trump voters are "divided up" among the remaining candidates.
"Until there’s some kind of consolidation here, you’re not going to have a clear alternative to Donald Trump, and the argument we’ve made is, I’m as conservative as anyone in this race, but I’m the conservative that can unify the Republican Party," Rubio said.
Co-host Ashley Earhardt asked Rubio if he needs to start winning primaries in order to win the nomination.
"You don’t win the nomination by how many states you win," Rubio responded before adding that he will have to win some winner-take-all states in March.
Earhardt then asked Rubio which states specifically he could win.
"Well, we feel great in every one of those states. We’re going to pick up delegates in all of them," he said, adding that he doesn't want to offer specific predictions.
Watch the interview via Fox News: